Li, Xiangrong
Wang, Chengjun
Lin, Zhiqin
Zhao, Meng
Ren, Xiaohui
Zhang, Xiaohui
Jiang, Zhongli http://orcid.org/0000-0002-0247-423X
Article History
Received: 28 September 2018
Revised: 16 December 2018
Accepted: 7 February 2019
First Online: 15 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. For this retrospective study, formal consent was not required.
: Informed consent was obtained from all individual participants who were included in the study.